If you liked
Shinseiki Evangelion
|
...then you might like
ChäoS;HEAd
|
Both are confusing and philosophical, and have similar endings.
If you liked
School Rumble
|
...then you might like
Toradora!
|
More than one love triagle, have a tsundere character, a rich girl character, are both funny romfoms except Toradora gets serious at times while school rumble stays silly.
If you liked
Suzumiya Haruhi no Yuuutsu
|
...then you might like
Boku wa Tomodachi ga Sukunai
|
Girl forces boy to join a club that he doesn't want to be involved with.
If you liked
Slayers
|
...then you might like
Fairy Tail
|
The characters and the idea of adventuring with a group a friends is very similar.
If you liked
Bokusatsu Tenshi Dokuro-chan
|
...then you might like
MM!
|
Main male gets beatings every episode by the female characters
If you liked
Kore wa Zombie desu ka?
|
...then you might like
Itsuka Tenma no Kuro Usagi
|
Both are light hearted at first, but become more dark as the series progresses. Plus, both main guys are immortal, except Taito can only die so many times.
If you liked
Higurashi no Naku Koro ni Rei
|
...then you might like
Suzumiya Haruhi no Shoushitsu
|
Both the main protagonists (Rika & Kyon) have to decide which world to live in. The "perfect world" and their original world.
If you liked
Higurashi no Naku Koro ni
|
...then you might like
Suzumiya Haruhi no Yuuutsu (2009)
|
Both have time repeating as a central plot.
If you liked
Elfen Lied
|
...then you might like
Higurashi no Naku Koro ni
|
Both are very Violent and bloody.
If you liked
Suzumiya Haruhi no Yuuutsu
|
...then you might like
Lucky☆Star
|
Lucky Star makes a lot of references to Suzumiya Haruhi no Yuuutsu. The main chacter Konata even cosplays as Haruhi in one episode.